Septimus Warren Smith -  A World War I veteran suffering from shell shock, married to an Italian woman named Lucrezia. Though he is insane, Septimus views English society in much the same way as Clarissa does, and he struggles, as she does, to both maintain his privacy and fulfill his need to communicate with others. He shares so many traits with Clarissa that he could be her double. Septimus is pale, has a hawklike posture, and wears a shabby overcoat. Before the war he was a young, idealistic, aspiring poet. After the war he regards human nature as evil and believes he is guilty of not being able to feel. Rather than succumb to the society he abhors, he commits suicide.
Peter Walsh (In-Depth Analysis)